WYSIWYG Web Builder has more than 150 new features and thousands of new options.
When implementing new features or moving to newer technologies it's not also possible to keep existing features working exactly the same way as they did in older versions.
Some underlying components or code may have become obsolete or has been replaced by other (more modern) technologies.
We do not always have control over this. But we want to keep up with the latest HTML standards and be as 'future proof' as possible.

CMS
In previously versions the CMS admin only supported login of admins, so the username was not necessary.
However the cms admin now supports built-in user management so it no longer depends on the login tools.
To make this possible we had to add a username field to the login form. This means that administrator now will have to enter 'admin' as the user name.
Note that leaving the user name empty will also default to 'admin'.

CMS File Manager
In previously versions the File Manager was integrated in the CMS Admin script.
In the new version the File Manager is a plug-in. This makes it possible to disable it or replace it with another file manager and even modify the entire behavior of the file manager (for advanced users!).
So if you want to use the File Manager you need to enable the 'file manager' plugin in the CMS Admin properties:http://www.wysiwygwebbuilder.com/cms_plugins.html

This also means that it is no longer possible to edit the 'Asset Folder' of the File Manager in the CMS Admin Properties.
Instead you can modify the folder by editing the file
\Documents\WYSIWYG Web Builder\system\plugins\filemanager\adminform.php
(change the line: $asset_folder = './files/';)

Ribbon Interface
WWB9 now supports the Ribbon Interface.
If you rather prefer the menu and toolbars then you can switch back to the classic looks via Tools->Options->Miscellaneous->Interface.
Note however that many of the new features like palette galleries (to quickly select shapes, textures, colors etc) and context tabs will not be available in that case.

Twitter
Recently Twitter has discontinue their unauthenticated v1.0 API. This means that it is no longer possible to get Twitter data without authentication.
The News Feed Ticker has been redesigned to make use of the new Twitter authentication v1.1 API.
Please read the help for more details about Twitter API authentication.

CSS menu
The CSS menu has been completely redesigned. It now has more than 50 new options and support sub levels.
One side effect of the multi level support is that is now synchronizes the entire Site Manager tree instead of just one level, just like the menu bar.
Some user have asks us if we can also add support for level selection, so we try to add this in a future update.

Blog
The blog has been redesign to be more SEO friendly. The blog items are now embedded in the current page instead of being displayed inside an inline frame.
To make this possible we had to move the RSS icon from the top to the bottom of the blog. This will not have any effect on the behavior of the RSS feed itself.

jQuery
In version 9 we have upgraded to jQuery 1.9.1. This may have impact on some extensions that rely on older versions of jQuery.
If an extension no longer works correctly then you can switch back to the old version of jQuery (1.7.2) in the Page Properties->Miscellaneous->jQuery Version.
All internal scripts currently work with both versions.

jQuery UI
We have upgraded to a newer version of jQuery UI. All internal jQuery UI widgets have been redesigned to make use of the new API.
This also affects jQuery UI themes. If you have created your own theme(s) then you need to regenerate the theme so it will be converted to the new format:
1) Open the jQuery UI Theme Manager
2) Select your the theme and click 'Edit'
3) Click 'Save'

HTML beautifier
The HTML beautifier option formats the HTML code so it looks better and is easier to read.
This option will affect all HTML on the page. Including custom adding code and code generated by extensions!
HTML beautifier only with valid HTML code, so this means that if your code or the code of a third party extension is invalid then there may be errors in the output.
So (more than ever) it's very important to only include valid HTML code.

Shapes
Many users use shapes (rectangles or rounded rectangles) for backgrounds or other layout purposes.
Now in version 9 you can also select to publish these shapes as standard CSS3. This may give your pages a speed boost because the browser no longer needs to load large images!
In the Shape's properties select Publish->Format->Publish as CSS3.

Other
If you experience different behavior of features compared to older versions of the software then first check the help. Most features have been well documented in the help.

Important: If you are updating an existing website then make sure that you republish all files.
Many scripts and other assets have been updated, so to make sure all old files on the server will be overwritten by the new versions!